Published file set over 50 times larger in Japanese

Hi Kai, We have experienced this before and the font is the likely culprit. I believe it is because fonts are embedded when required so the content is actually rendered as an image OR the font itself is being included in the published file. That is why it is affecting only some languages. You may need to try different fonts to find one that results in a smaller published file size. Arial Unicode MS is the fallback choice, or try Noto Sans or Source Han Sans (both open source). I hope that helps.